A is correct but R is not correct
R is correct but A is not correct
both A and R are correct
both A and R are incorrect
reduce by 200 kg
increase by 200 kg
increase by 250 kg
reduce by 250 kg
Drag line
Hoe
Clam shell
Dipper shovel
(i), (ii) and (iv) are correct
(ii), (iii) and (iv) are correct
(i), (iii) and (iv) are correct
(i), (ii) and (iii) are correct